高钾血症有可能不引起下列哪项心电图改变() ["A．PR间期延长","B．T波高尖","C．QRS波延长","D．U波出现","E．QT间隙延长"]
肺癌手术前健康指导?
低渗透状态的常见病因不包括下列() ["A．袢利尿剂","B．输液过量","C．肾上腺皮质功能不全","D．肾衰竭","E．有效循环血容量下降"]
低渗性缺水的症状时不出现下列哪种() ["A．直立性晕倒","B．疲乏、头晕","C．手足麻木","D．血压下降","E．常有口渴"]
心脏手术后出现少尿或无尿的原因?
食管术后吻合口瘘的主要临床表现?
